Double-tree



(No Model.)

W` C.'PEGK,HA1VL y DOUBLETREE. No. 329,075. Y Patented Oct. Z7, 1885.

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' Attorneys.

' Unirse STATES Artnr tripa.

WILLIAM O. PECKHAM, OF TROY, OHIO.

DOUBLE-TREE.

SPECIFICATION forming part of Letters Patent No. 329,075, dated October27, 1885.

Application filed May 14, 1885.. Serial No. 165,500. (No model.) I

To @ZZ whom it may concern:

Be it known that I, WILLIAM C. BECKHAM, a citizen of the United States,residing at Troy, in the county of Miami and State of Ohio, haveinvented a new and useful Improvement in Double-Trees, of which thefollowing is a specification, reference being had to the accompanyingdrawings.

My invention relates to an improvement in double-trees; and it has forits object to provide an adjustable center piece, whereby thedouble-tree may be readily and easily laterally adjusted for the purposeof equalizing the draft.

A further object of the invention is to provide an improved constructionof cap adapted to be fitted on the ends of the double-tree to receive animproved construction of hook for the attachment of the single-trees,which hook is so constructed as to give with the movements of the team,and remove all strain and jars from the same.

With these ends in view the invention consists in the improvedconstruction and combinations of parts, hereinafter fully described, andpointed out in the claims.

In the drawings, Figure 1 is a front View of a double-tree having myimprovement applied thereto. Fig. 2 is a section on the line .r x ofFig. l. Fig. 3 is a longitudinal vertical section of the casing G andcasting D. Fig. 4

is a transverse section of the same, and Fig. 5V

is a transverse vertical section of Fig. 3.

In the accompanying drawings, in which like letters of referenceindicate corresponding parts in all the gures,A represents thedouble-tree, which is provided with a groove or channel, c, over whichis secured a plate, B, which has a slot, b, running nearly its entirelength. The slot b is somewhat smaller than the groove or channel a, sothat the edges of the plate B project inwardly beyond the sides of saidgroove or channel.

Upon the plate B, at suitable points, are provided ribs or corrugationsc, which are adapted to be engaged by grooves d, formed on the underside of a plate, C. This plate has an eye for the passage of a clevisfor pivoting the double-tree in place, and is provided near each end, ona line with the slot in the plate B, with holes or openings e, which areadapted to be engaged by bolts f, the heads of which bear against theedges of the plate B,

adjacent to the slot therein, and on the inner side of said slot. Theends of the bolts f pass through the holes or openings and are engagedby nuts g, which when tightened hold the plate C firmly and securely inplace. It will be seen that by removing the nuts from the bolts thedouble-tree may be removed and moved laterally to any desiredadjustment, and then be secured in place by engaging the plate B withplate C and tightening the nuts on the bolts.

D represents a casting,which comprises the socket E,to receive the endof the double-tree and the portion F. rlhis portion F is open on it-sfront and rear sides, and is formed on its lower and upper sides withrecesses h, communication with which may be had from the rear side ofthe said portion F.

G represents a casing, which is preferably cast. This casing is formedwith bearing-lugs t', whichlare adapted to engage the recesses h in theportion F, and thus pivot said casing within the portion F.

Within the casing G is a coil-spring, H, and passing through said casingis an eyebolt or hook, I, the end of which is threaded. Upon thethreaded end of this bolt is anut, J, against which the spiral springbears at one end, said nut being held in place in any suitable manner,preferably by a pin passing transversely through the end of the bolt.The other end of the spring bears against the closed end of the casingG, which, however, is provided with a hole or opening for the passageofthe hook or eyebolt I. It will be apparent that in use two of thesebolts and casings will be employed, one at each end of the doubletree.It will also be obvious that said bolts are for the attachment of thesingle-trees to the double-tree.

It will be seen that by the employment of my improvement strain andsudden jars, to which a team is subjected, particularly when drawingheavyloads and in plowing, are obviated.

The improvements before described are simple in their construction, maybe supplied at a comparatively slight cost, are strong and durable, andthoroughly effective for the purposes intended.

It will also be apparent that by the employment of my improvement thedraft may be IOO .V equalized-that is to say, the double-tree can be soadjusted laterally with regard to its point of attachment that thegreater part of the strain to which the team is subjected may be thrownupon the heavier or stronger horse of the team.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combinatiomwith a double-tree, of a slotted plate having a seriesof ribs on its outer face secured thereto, a plate, C, having grooves toreceive said ribs, and an eye adapted to receive a elevis, and bolts orequivalent fastening for securing said easing in place, asset forth.

2. The eombinatiomwith a double-tree, of a casting on the end thereof,said casting having bearing-recesses, and a casing having lugs ,toengage said recesses and carrying a springeyebolt, as set forth. Y

2v Y d 329,075

3. The combinatiomwith a doubletree, of a casting comprising the'soeket,and portion F, having bearing-recesses, of a casing having lugs toengage said recesses, and an eyebolt in said easing, as set forth.

4. The combinatiomwith a double-tree, of a casting comprising a socket,and portion F, having bearing-recesses, as described, of a casing havinglugs to engage said recesses, an eyebolt in said casing, a spring onsaid eyebolt, and a nut to engage the end of said bolt, substantially asset forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in `presence of two Witnesses.

WILLIAM C. PECKHAM,

